Collapsible box



FIG. 1 is a perspective view of a collapsible box, showing my new design in an assembled configuration;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is a rear elevational view of FIG. 1;

FIG. 4 is a right-side elevational view of FIG. 1;

FIG. 5 is a left-side elevational view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1;

FIG. 7 is a bottom plan view of FIG. 1; and,

FIG. 8 is a top plan view thereof, illustrated in a flat configuration. 

CLAIM I claim the ornamental design for a collapsible box, as shown and described. 